Machinery-belt.



No. 723,917. PATENTED MAR. 31, 1903.. G. E. PRESTON.

MACHINERY BELT. APPLIOATION FILED JUNE 1s., 1902.

lMODEL.

MXL, f5? M gli@ UNITED STATES VPATENT OFFICE.

GEORGE E. PRFSTON, OF CHICAGO, ILLINOIS.

MACHINERY-BELT.

SPECIFICATION forming part of Letters Patent No. 723,917, dated March31, 1903.

Y Application filed June 19, 1902- Serial No. 112,285. (Model.)

To @ZZ whom it may concern:

Be it known that I, GEORGE E. PRESTON, a citizen of the United States,residing in Chicago, in the county of Cook andState of Illinois, haveinvented a new and useful Improvement in Machinery-Belts, of which thefollowing is a specification.

This invention relates to an improved construction of machinery-beltswhereby they may be prevented from stretching, so that the weakening ofthe belts and the lossv of time and annoyance caused by frequentstoppages to take up the slack may be avoided.

My improved belt is composite in its nature-that is to say, it employstwo or more material-s in its make-up; Vand iti consists of a continuousband of hard dry rawhide, in combination with a suitablefriction-surface. The latter may be leather, fulled rawhide, rubber, orduck, and preferably an outer covering of the same or other suitablematerial is employed. The rawhide band which forms the mainstrength-giving feature of my belt is composed of united lengths ofordinary dry and hard rawhide-that is, rawhide which has been eshed andunhaired in the ordinary manner and then thoroughly dried. I use itwithout softening it or fulling or mechanically treating or stretchingit, as I find that in its natural state such rawhide is practicallynon-stretchable and very strong, while it is also sufficiently pliantfor belt purposes, and when combined with a proper leather or otherinside facing for friction with the pulley it forms a very desirable andstrong belt, requiring no taking up.

4I showin the accompanying drawings at Figure l a side elevation of myimproved belt, at Figs. 2 and 3 edge views of dierent portions of thebelt, at Fig. 4 a partial plan, and at Fig. 5 a cross-section.

In said drawings, 6 6 represent. lengths of hard dry rawhide unitedtogether by scarfjoints and forming a continuous band of the rawhide,possessing great strength and no stretchability under the strainrequired. To this band is applied an inner surface 7, of

The sections 6 of rawhide are also united by scarfjoints 10, and therawhide may be scarfed in the ordinary scarfing-machine by firstmoistening the end which is to be cut away without permanently softeningthe hide. The joint which unites the endsV of the belt is shown at 1l.

In such a belt as that .described the dry rawhide portion prevents thestretching of the surfacing material, so that the user avoids thefrequent waste in the belt itself and the loss of time occasioned bytaking up of the stretch. l

I am aware that laminated belts have been patented embodying fulled orprepared rawhide. Such belts are not claimed by me and do not accomplishthe end held in View herein, because the fulled or prepared rawhidestretches even' more than the leather.

I claim- 1. The belt herein described consisting of l a band of hard,dry rawhide'and a surfacing of friction material, substantially asspecified.

2. The belt herein described consisting of a band of hard, dry rawhidethe lengths whereof are united by scarf-joints, and a sur facing offriction material, substantially as specified.

3.' The composite non-stretching belt having its strain-resisting memberformed of dry hard rawhide inits natural state, .substan-V tially asspecified.

GEORGE E. PRESTON.

Witnesses: Y

Einw. S. EvARTs,

L. LINDAUER.

